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December 4th, 2025 :: 11:06 pm CST   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated December 4th at 9:54 pm 
Temperature:1°F Dew Point:-0°F
Barometer:30.24 inHg Wind:calm
Humidity:89.3% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
Dec 4th
Friday
Dec 5th
Saturday
Dec 6th
Sunday
Dec 7th
Monday
Dec 8th
Cloudy Cloudy Cloudy Cloudy Cloudy
18°F
30°F
3°F
32°F
26°F
26°F
9°F
25°F
5°F
 
 Decatur Detailed Weather Forecast  
 
Friday, December 5th, 2025
Overnight Temperature: 4°F
A mix of cloudy and clear skies.
Morning Temperature: 22°F
Cloudy. Windy at times.
Afternoon Temperature: 25°F
Cloudy. Windy at times.
Evening Temperature: 29°F
Cloudy. Windy at times.
Saturday, December 6th, 2025
Overnight Temperature: 29°F
Cloudy.
Morning Temperature: 31°F
Cloudy.
Afternoon Temperature: 31°F
Cloudy.
Evening Temperature: 27°F
Cloudy.
Sunday, December 7th, 2025
Overnight Temperature: 25°F
Cloudy with a chance of flurries.
Morning Temperature: 25°F
Sunny with cloudy periods with a chance of flurries. Windy at times.
Afternoon Temperature: 18°F
Sunny. Windy at times.
Evening Temperature: 11°F
Cloudy. Windy at times.
Monday, December 8th, 2025
Overnight Temperature: 7°F
Clear with cloudy periods.
Morning Temperature: 19°F
Cloudy.
Afternoon Temperature: 19°F
Cloudy.
Evening Temperature: 23°F
Cloudy.
Tuesday, December 9th, 2025
Overnight Temperature: 26°F
A mix of cloudy and clear skies with a chance of flurries. Windy at times.
Morning Temperature: 33°F
Cloudy. Windy at times.
Afternoon Temperature: 37°F
Cloudy. Windy at times.
Evening Temperature: 39°F
Cloudy with a chance of showers. Showers possibly mixed with wet flurries. Windy.
Wednesday, December 10th, 2025
Overnight Temperature: 41°F
Cloudy with showers likely. Windy.
Morning Temperature: 46°F
Cloudy with a few showers. Windy.
Afternoon Temperature: 39°F
Cloudy. Windy at times.
Evening Temperature: 33°F
Cloudy with a slight chance of flurries or showers. Risk of freezing rain. Windy at times.
Thursday, December 11th, 2025
Overnight Temperature: 31°F
Cloudy.
Morning Temperature: 32°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 29°F
Sunny.
Evening Temperature: 26°F
Clear.
Friday, December 12th, 2025
Overnight Temperature: 23°F
Clear.
Morning Temperature: 28°F
Sunny. Windy at times.
Afternoon Temperature: 26°F
Mostly sunny.
Evening Temperature: 24°F
Cloudy.





 

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9:55 PM  5°F
 
 
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9:55 PM  -2°F
 
 
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9:53 PM  7°F
 

 
This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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